• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

The propagation of tau oligomers and the neurotoxicity

Research Project

Project/Area Number 17K10297
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Psychiatric science
Research InstitutionKyoto University

Principal Investigator

keiko Imamura  京都大学, iPS細胞研究所, 特定拠点講師 (90379652)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsタウ / タウオリゴマー / 前頭側頭葉変性症 / iPS細胞 / 神経活動 / FTLD / オリゴマー
Outline of Final Research Achievements

Abnormal tau protein aggregation along with cerebral atrophy is important pathological characteristics in the brains of Alzheimer's disease and frontotemporal dementia. In this study, we focused on the neurotoxicity of tau oligomers and their propagation. Extracellular tau oligomers caused neurotoxicity in neurons derived from FTLD-patient iPS cells, and the results indicated that the toxicity was propagated in a neural activity-dependent manner. Furthermore, we identified compounds that inhibited tau oligomer accumulation and neuronal cell death. We also reported that an intranasal tau vaccine was effective in FTLD mouse model. We explored potential therapeutic approaches based on the neurotoxic mechanisms of tau oligomers and their propagation.

Academic Significance and Societal Importance of the Research Achievements

タウタンパク質の折り畳み異常が、タウタンパク質凝集の早期段階であると考えられ、特に複数個のタウタンパク質が凝集して形成されるタウオリゴマーが強い神経毒性を有していると考えられている。本研究では、タウオリゴマーが、どのように神経毒性を発揮し、細胞から細胞への毒性伝搬に関連しているかを明らかにした。また、候補化合物やワクチンの有効性を見出し、タウオリゴマーの伝搬と神経毒性メカニズムに基づく治療アプローチの可能性を示した。本研究は超少子高齢社会における高齢者の認知症予防に貢献し、医学的・社会経済的にも高度の意義を有すると考えられる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (6 results)

All 2020 2019 2017

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (3 results) (of which Int'l Joint Research: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Nasal vaccine delivery attenuates brain pathology and cognitive impairment in tauopathy model mice2020

    • Author(s)
      Takeuchi Hiroki、Imamura Keiko、Ji Bin、Tsukita Kayoko、Enami Takako、Takao Keizo、Miyakawa Tsuyoshi、Hasegawa Masato、Sahara Naruhiko、Iwata Nobuhisa、Inoue Makoto、Hara Hideo、Tabira Takeshi、Ono Maiko、Trojanowski John Q.、Lee Virginia M.-Y.、Takahashi Ryosuke、Suhara Tetsuya、Higuchi Makoto、Inoue Haruhisa
    • Journal Title

      npj Vaccines

      Volume: 5 Issue: 1 Pages: 28-28

    • DOI

      10.1038/s41541-020-0172-y

    • NAID

      120006817588

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] High molecular weight amyloid β1‐42 oligomers induce neurotoxicity via plasma membrane damage2019

    • Author(s)
      Yasumoto Taro、Takamura Yusaku、Tsuji Mayumi、Watanabe‐Nakayama Takahiro、Imamura Keiko、Inoue Haruhisa、Nakamura Shiro、Inoue Tomio、Kimura Atsushi、Yano Satoshi、Nishijo Hisao、Kiuchi Yuji、Teplow David B.、Ono Kenjiro
    • Journal Title

      The FASEB Journal

      Volume: 33 Issue: 8 Pages: 9220-9234

    • DOI

      10.1096/fj.201900604r

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Tau propagation model in vitro using FTLD-tau neurons2019

    • Author(s)
      Keiko Imamura, Haruhisa Inoue
    • Organizer
      第42回日本神経科学大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Oligomeric tau contributes to neurodegeneration in FTLD patient iPSC-derived neurons2017

    • Author(s)
      Keiko Imamura, Naruhiko Sahara, Haruhisa Inoue
    • Organizer
      第40回神経科学大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Neuronal activity modulates oligomeric tau-mediated neurodegeneration in FTLD-Tau neurons2017

    • Author(s)
      Keiko Imamura, Naruhiko Sahara, Haruhisa Inoue
    • Organizer
      XXIII World Congress of Neurology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] タウオパチーの予防又は治療剤2019

    • Inventor(s)
      井上治久、今村恵子
    • Industrial Property Rights Holder
      京都大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-194758
    • Filing Date
      2019
    • Related Report
      2019 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi